MTN South Africa Query

I have contract with MTN and now I'm experiencing horror after more than 10 years what happened is they're deducting on the 25th of every month the 25th on February 2023 was on a Saturday and I got paid on Monday so the debit order failed I called them on the 04th March 2023 when I saw the money not yet deducted I spoke with consultant named Mpho.Teffo he advise that I do an EFt payment and forwarded me with their bank details from Standard bank I did the EFT and put my contract number as reference however I missed a number so the reference was incorrect instead of writing my *** I wrote *** and I send him the proof of payment to *** however he didn't respond and I told myself that he received it and will send to allocation my guess was wrong when they block my service after 10 days said I'm still owing them I called and spoke to the lady called Ntswaki she promises to assist and ask to resent the proof of payment to her however nothing was sorted out I called again the customer care line I spoke to this lady explain myself again this just set a double debit order for me without sorting out nothing and without my knowledge how *********** is MTN customer care consultant come month end they requested double debit my bank send me an SMS to accept I decline knowing I don't owe them 2 months payment I only owe the present month so they didn't debit the single payment I even when to my bank which confirms the money was deposited in standard bank MTN account then they block my service I called back the customer care line and spoke to Fanie who again ask for proof of payment which I did sent and he promised to resolve the issue and I even told him to deduct for March which he said he will do an immediate payment after he called said everything was sorted to my horror the debit was successful however later my bank sent me and message to authorise another debit order from MTN I decline that knowing the debit was successful and was asking myself why should they want to debit again Fanie called and I ask him why the other debit order he told me it was processing for that payment of February and promised that everything is sorted out the account department will allocate the payment into my contract account and I was happy it didn't last long when they block my service again I call again the customer care line which I spoke to this guy called Mandiso he told me to go to Standard bank and reverse the money back and make a payment again so I ask him how can they not allocate the payment into my contract account and acknowledge that I wrote incorrect reference however they can still allocate the payment I even requested him to transfer me to the account department or to speak to a manager he told me managers are not always available I was so shocked with that information because I was so desperate I went to Standard bank they told me the money was paid in their clients account they want approval from MTN I called the customer care number again because I was so angry look like fool I found this rude Girl by the surname Bhuthelezi she didn't want to interact she was so annoyed by my story and when I tried to explain she just cut me short I requested the manager to contact me as they always not around she said she will send an email which I doubt she sent it was on the 10 April 2023 till today I told of her behaviour towards me which she just say sorry cus you can here by the tone of the voice she just did to please me . MTN has *********** Customer care consultant and managers till today my query has not been solved I wonder how they their reviews because clearly it shows what company they are running not meeting clients satisfaction my name is sibongile Thongwana please assist me with advise on what to do and I've told myself after this contract end I will never ever renew my contract again with MTN I'm done